A nuclear facility in Iran was hit by a “terrorist act” a day after it unveiled new advanced uranium centrifuges, a top nuclear official says.
He did not say who was to blame but urged the international community to deal with nuclear terrorism.
Israeli media suggest the incident was a result of an Israeli cyber attack.
Last year, a fire broke out at the Natanz underground facility, which the authorities alleged was the result of cyber sabotage.
The latest incident comes as diplomatic efforts to revive a 2015 nuclear deal – abandoned by the US under the Trump administration in 2018 – have resumed.
On Saturday, Iran’s President Hassan Rouhani inaugurated new centrifuges at the Natanz site, which is key to the country’s uranium enrichment programme, in a ceremony broadcast live on television.
Centrifuges are needed to produce enriched uranium, which can be used to make reactor fuel – but also material for nuclear weapons.
It represented another breach of the country’s undertakings in the 2015 deal, which only permits Iran to produce and store limited quantities of enriched uranium to be used to produce fuel for commercial nuclear power plants.